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<identifier>oai:HAL:hal-01204222v1</identifier>
<datestamp>2018-01-11</datestamp>
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<title lang=en>C, N and P fertilization in an Amazonian rainforest supports stoichiometric dissimilarity as a driver of litter diversity effects on decomposition</title>
<creator>Barantal, Sandra</creator>
<creator>Schimann, Heidy</creator>
<creator>Fromin, Nathalie</creator>
<creator>Haettenschwiler, Stephan</creator>
<contributor>Ecologie des forêts de Guyane (ECOFOG) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) - Institut National de la Recherche Agronomique (INRA) - Université des Antilles et de la Guyane (UAG) - AgroParisTech - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Royal Holloway [University of London] (RHUL)</contributor>
<contributor>CNRS 'PIR Amazonie II' grant ; Agence Nationale de la Recherche (CEBA) [ANR-10-LABX-25-01]</contributor>
<source>ISSN: 0962-8452</source>
<source>Proceedings of the Royal Society B: Biological Sciences</source>
<publisher>Royal Society, The</publisher>
<identifier>hal-01204222</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01204222</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01204222</source>
<source>Proceedings of the Royal Society B: Biological Sciences, Royal Society, The, 2014, 281 (1796), pp.article 20141682. 〈10.1098/rspb.2014.1682〉</source>
<identifier>DOI : 10.1098/rspb.2014.1682</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1098/rspb.2014.1682</relation>
<identifier>PRODINRA : 289918</identifier>
<language>en</language>
<subject lang=en>litter diversity</subject>
<subject lang=en>neotropical forest</subject>
<subject lang=en>nutrient addition</subject>
<subject lang=en>soil fauna</subject>
<subject lang=en>stoichiometry</subject>
<subject lang=en>trait dissimilarity</subject>
<subject>[SDV] Life Sciences [q-bio]</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Plant leaf litter generally decomposes faster as a group of different species than when individual species decompose alone, but underlyingmechanisms of these diversity effects remain poorly understood. Because resource C : N: P stoichiometry (i.e. the ratios of these key elements) exhibits strong control on consumers, we supposed that stoichiometric dissimilarity of litter mixtures (i.e. the divergence in C : N: P ratios among species) improves resource complementarity to decomposers leading to faster mixture decomposition. We tested this hypothesis with: (i) a wide range of leaf litter mixtures of neotropical tree species varying in C : N: P dissimilarity, and (ii) a nutrient addition experiment (C, N and P) to create stoichiometric similarity. Litter mixtures decomposed in the field using two different types of litterbags allowing or preventing access to soil fauna. Litter mixture mass loss was higher than expected from species decomposing singly, especially in presence of soil fauna. With fauna, synergistic litter mixture effects increased with increasing stoichiometric dissimilarity of litter mixtures and this positive relationship disappeared with fertilizer addition. Our results indicate that litter stoichiometric dissimilarity drives mixture effects via the nutritional requirements of soil fauna. Incorporating ecological stoichiometry in biodiversity research allows refinement of the underlying mechanisms of how changing biodiversity affects ecosystem functioning.</description>
<date>2014</date>
</dc>
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